|Compatible networks||GSM/GPRS/EDGE 900/1800/1900 for W350c/W350i, GSM/GPRS/EDGE 850/900/1800/1900 for W350a|
|Availability by region||2008|
|Form factor||Compact flip|
|Dimensions||104 × 43 × 11 mm, 104 × 43 × 10.9 mm|
|Mass||75 g, 80 g|
|Operating system||Sony Ericsson proprietary OS|
|Memory||512 MiB (14 MB internal)|
|Removable storage||Memory Stick Micro M2|
|Display||1.9" 262,144 colors (176x220 pixels) TFT|
|Rear camera||1.3 megapixel|
|Connectivity||Bluetooth 2.0, USB 2.0|
The screen is a 262.144 color TFT at a resolution of 176×220. The W350a is 104.0mm × 43.0mm × 10.9 mm and weighs 80g while the W350i and W350c are 104.0 × 43.0 x 11 mm and weigh 75g. The colors available are available in Electric Black, Hypnotic Black, Ice Blue, Graphic White, Wisteria Purple, Turbo Red and Soft Pink.
The phone has 14 MB integrated memory and supports Memory Stick Micro (M2) add-in cards for music, photos, videos and other files.
The defining features are centered on music and media. The phone has a built in media player supporting browsing by artist and album, creating playlists, and purchasing songs online using PlayNow. Additionally, the phone includes TrackID which can identify the names of songs by listening to them. 
The phone also has Internet software including RSS, a Web browser, WAP 2.0 XHTML, WAP 1.2.1, Web feeds, Access NetFront Web Browser and email. The phone supports SMS and MMS messaging with predictive text input.
Other features include a built-in photo-only camera, video viewing, Java support, a speakerphone, MP3/MIDI ringtones, a USB connection for computer syncing, a built in modem for providing Internet access to computers, animated wallpapers, sound recording, a timer, task manager, stopwatch, phone book, games and notes.
The phone also features flight mode which deactivates wireless broadcast and reception in order to allow users to access other features of their phone during flights.
It comes with the games Extreme Air Snowboarding, Guitar Rock Tour, and QuadraPop.
Sony Ericsson W350a have 1.48 W/kg SAR.